Adjustable shelving rack



FIG. 1 is a perspective view of an embodiment of the adjustable shelving rack showing my new design;

FIG. 2 is a front view of my new design;

FIG. 3 is a rear view of my new design;

FIG. 4 is a first side view of my new design;

FIG. 5 is a second side view of my new design;

FIG. 6 is a top view of my new design; and,

FIG. 7 is a bottom view of my new design. 

The ornamental design for the adjustable shelving rack, as shown. 